Stripping films



. 1,591,304 w. w. GIVEANS STRIPPING FILM July 6 1926..

Filed July 16 1925 l INVENTOR: .M W-Wmg M ATTORNEYS.

Patented July UNITED. a srATus PATENT ,orr cu.

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Application fled. July 1a; 1025. Serial an. ass.

This invention has reference, generally, tothe production of what is known in the fart as stripping films, the film being 'dis posed upon the surface of one medium and adapted to be transposed to the surface of ,another medium for use therewith in a 1 forth.

manner to be and generall improving the working and object to jigivide a novel stripping at this time more particularly enumerated will be fully understood from the following 1 of ham M li smooth and surface :to change such printing qua ity of photographic negatives. The present invention has for its furifsiher 1m ada ted to readily a plied to-the su ace of glam to-in 'cate ground glass; and, finally, to provide a convertible stripfilm which is readily applicable to the.

pin varfiius arts, crafts, sciences, and trades. Other ob ectsof the'present invention not detailed demription of the same.

With the various objects of the present invention in view, the invention consists,

reduction of a novel film nerally in the ge to be'transmitted to a surface into a rough or a. granular surface for use in the various arts and trades, and,

- reto means of the film, of photograp more particularly to the preparation, by f a bl bl king fives or in en 11 n- -0c on W g 6 p a d, ablin improving and desirably expose and developed negatives.

My present invention consists, fprthermore, in the novel process,' mthod,

. device, contrivance, productof.producing and procurin sues of .various t 'cknessfihapd of "various. or tissue;be-

ficent films and tisof rou hness, the

' degrees from the'rough or toothed ing transferab e surface of a' base-, as paper,to a smooth surface so as to transform such smooth surface into a rough Furthermore, the nvention consists in the novel surfacing and vigiietting film which consist of a scientifi'ca y en chemically hereinafter more fully set ce or i air-brush and all other methods usually emproper an suita 1e means for the urposes and doctonngpurposeaan en- 4 all ordinary conditions.

or part 3g, i s printmg qualities-W111 be obtamed. I

- tion of a base,a volatilefor hydrolytlc .solved' parting medium applied thereon, an

treated'film' and surface-formin substances, to providea film of various qua ity of grain or roughness, suitablefor many and various requirements, to be readily applied to flat to or curved, smooth or polished surfaces, such as glass, and other suitable'materials, and

when so applied the surface, as a base, being transformed into a translucent, non-reflective impaired, granular, rough, or toothed surface, whereby the originally smooth or polished surface is ;in a perfect condition to receive applications of anhydrous paints, chalk, doctoring and retouching mediums.-.

I have found in practice that this created surface'can be harshly worked and blended" upon, with a brush, pencil, stump, eraser,

tip of [the finger, etc., without losing its structural strength, so that fade'away,

effects may be readily obtainable "by the unskilled. With the present invention, the customary ground glass substitutes, and the 10 d by photo aphers may be dispensed rith, withresp ezt to the desired details of a photo hic negative when provided upon its with a film made according to the principles of the )present invention, all. intermediate details upon the plane, between the edge of the ne atlve and the center, are

directly approacha le for doctoring, shadby means of the herein dein orthelike,

film, the film offering a scribed vi ettin of modifying, altering, improving,c angmg,

balancin buildin 'up, reducing, and perfooting t e expose and developed negative to one s fancy.

It will be understood, that'the degree of the film-medium may be-varie'd, and that a.

converted film will appear translucent over, 1

its entire plane, and will remain so under -,However, if a suitable varnish-like medium be applied for local increasedlli-ght requirements, the place light, and hence, local inten-' The inventlon is illustrated in the accom- 'an drawings'which clearly illustrates ne eriigodiment of thesa'me] In the ,said drawings,'Figure ive view showing a enta porintermediate coating applied. upon rouglh feat er-edges, wash'back'giounds, and cloudso treated will permit of .a freer pasion I parting medium, and a film-providing layer applied upon said intermediate medium.

Figure 2 is a face view of the rear or back of a photographic negative or other base,

with the convertible film transferred to said 'ofa good quality of paper, or other suitable substance, the surface 1 of which is substantially rough, or of a. serrated or toothed nature. Thereference-character 7) indicates a suitable parting medium, formed of-a suitable volatile or hydrolytic solution. or the equivalent thereof. 0 indicates a resinous or other hard. firm coating. which may be either rough or smooth, and is termed herein the intermediate coating. and 07 indicates the convertible film ortissue of cumar and gelatinc. the reference-character 2 indicating the rough serrated or toothed surface of the same.

Briefly, the paper a is the temporary base, the wax b is the parting or separating element, cumar, i ndicatedby -0, gives hardness and strengthto the rough or serrated sur face of the to be transferred gelatine tissue or film, and d is the resultant cumar-faced gelatine tissue or film having the mentioned rough or toothed surface, which may receive upon said surface, applications of anhy drous paints, chalk, or other doctoring and I retouching mediums, the created surface 2 being adapted to be harshly worked and blended upon with brush, pencil. stump,

eraser, tip of the finger, or in any other manner. without destroying the rough structure.-

and strength of the face of the film '11.

Referring now to Figures 2 and 3 of the d rawings, the reference-character 6 indicates the permanent base to which the cumarfaced tissue or film d has been transferred, in the manner to be presently described, the

base or vehicle 0 being either a photographic negative, a plate of glass, or other suitable transparent or translucent or opaque body. In the preparation of the convertible film,

I prefer, to take for the temporary base a,

a good quality of rag stock, such as a rough or serrated paper, or other material suitable for the base, to one of the surfaces is ap-. plied. in any suitable manner, a solution consisting of 12 grains of beeswax dissolved with the aid of heat in an ounce of carbon ;t-etrachloride, the solution being allowed to cool to the temperature of the room, and being applied by the usual capillary surfacedipping, or other suitable coating method to .one of the faces of the temporary base.

As soon' as this coating 6 has dried, this ,next take 72 grains of hard gelatine, place the same in a suitablereceptacle, and add two ounces of water, so as to allow the gelatine to suitably swell. finally dissolving the gelatine in a water bath at 120 degrees Fahrenheit; When the gelatine is completely dissolved and cooled to about 90 degrees Fahrenheit, I proceed to coat the Waxed cumar-coated base a with the gelatine. After the same has thoroughly dried, the

article of manufacture is cut up into suitable I sizes for future use in the manner to be presently set forth.

As a modification. the cumar-coating (second coating) may be entirely omitted, and a substitute of suitable resinous or harden-v ing matter may be directly incorporated in the final gelatine coating. 4

Tu order to transfer the film, as hereinabove produced. the complete article is immersed in sufficient clean cold water, for about ten ininutes, until the article swells and becomes thoroughly soaked. Thereupon. the article is next removed and placed, face out, upon a suitable slanting base or support for proper drainage. After the article has been sufficiently drained, it is placed face down; upon either side of the negative 0. or other suitable object, as may be desired, taking care to squeeze out all surplus water between the adjacent faces of;

the article and the permanent base or object towhich it is applied. 'After careful drying, either by gentle heat, or otherwise, the temporary paper orother base cfmay readily be removed by use of a knife-blade, or ingernail, at one corner, :to slowly pull away the temporary paper .or other base a, which is thereupon discarded, revealing the transferred film upon the permanent base (1,)

which as has been stated, may be either side of a photographic negative, or any other object desired as a permanent base.

In lieu of the formula herein-above stated, I may employ the following combination, by means of which I produce practically the same or similar results.

A. Raw paper base. 12 grains beeswax, dissolved in 30 c.c. carbon tetrachloride, '8 grains cumar, dissolved in 30 c. c. benzole. 7 2 grains hard gelatine, dissolved in 45 'c. 0.- water, to which is added, 6 grains sodium resinate, dissolved in 10 c. 0. water, and then 2 grains citric acid, dissolved in 5 c. 0. water is added to the above.

. B. Raw paper base. 12 grains beeswax, dissolved in 30 c. c. carbon tetrachloride, 8

grains cumar, dissolved in 30 c. c. benzole,

grains hard gelatine, dissolved in 45 c.c.

water, to which is added .6 grains sodium reslnate, dissolved in 10 c. c. water,and then 2 grains citric acid, dissolved in 5 c. c. water is added to the above.

' D. Raw paper base. '12 grains beeswax,

water. I

I am aware, also, that instead of the voladissolved in 30 c. 0. carbon tetrachloride, 72 grains hard gelatine, dissolved in 60 c. c.

tile solvent, carbon tetrachloride, I may substitute, acetylene tetrachlorideb From the foregoing description of the present invention, it will be seen, that I the result.

have produced a ro erly surfaced tissue film, which will a or a practical working surface for working up photo aphic negatives, but which is. also practi c al for other uses in the various arts. The tissue filmsroduced have a granular texture, with an innate quality of translucency that will reproduce a granular. reflection .and'hence a" tissuefihn without deflective lmpairment is Furthermore,

the film, the structure-order being obtained by or with-the-degree of the texture of the pfimary and ofthe secondary base. or bases,

ardness of grain of the working surface oft-he film is obtained by the hard or resin.-

ous middle coating, or by the hardened final film-coating, and thickness of the film is obtained by the hygroscopic andgravity density of the film-forming medium used and the speed of the coating 0 eration.

Of course, I am aware that c anges may be made in the arrangements and combinations of the various parts, without departing from the scope of the present invention asset forth in the foregoing specification. Hence, I do not limit my present invention to the exact arrangements and combinations of the various parts as described in the Said specification, and as illustrated inthe accompanying drawings.

I claim:-

1. The herein-described art of preparing surfaces which consists in applying a chems ically treated-film to such surface so as to transform the latter into a non-reflectively impaired translucent surface.

{2. The herein-described art of preparing surfaces which consists in applying a chemically treated gelatine filmto such surface so as to transform the latter into a non-reflectively impaired translucent surface.

surfaces which consists in applying a chem- ,means for producing mat-surface effects,

'ciated with a mat-sur ace 4. The herein-described art of preparing surfaces which consists in applying a resintreated gelatine film to such surface so as to transform the latter into a non-reflectively lmpaired translucent surface. 5. The herein-described art of. preparing ically treated film having a toothed or rough granular face to such surface so as to transform the latter into :a non-reflectively impaired transluc ent surface. 1

6. The herein described art of preparing surfaces which consists in applying a chemically treated gelatine filfn having a toothed. l

or rough granular face to such surfacev so as to transform the latter into a non-reflectively impalred translucent surface.

7. The herein-described art of preparing surfaces which consists in applying ares'intreated film having a toothed or rough granular face to such surface so as to transform the latter into a non-reflectively impaired translucent surface.

' 8. The herein-described rough granular face to such surface so as to transform the latter into a non-reflectively impaired translucent surface.

for producing mat-surface efi'ects, comprismg a temporary base, associated with a matiurface produc ng film removable from said 10. As a' new article of manufacture,

base, said base havgranular face assoproducing filmre comprisin a temporary ing a toot ed or rou movable from said base. "11..As a new article of manufacture, means for producing mat surface efiects comprising a temporary base, associate with a.mat-su'rface producing gelatine film removable from said base.

12. As a new article of manufacture, means for producing mat-surface efi'ects,

comprisin a temporary base, said base havh granular face, assoing a toot ed or rou ciated with a mat-sur ace reducing gelatlne film removable from said ase.

13.- As a new article of manufacture, means for producing mat-surface efl'ec'ts, comprising a tem orary base, associated with a resin-trea I mat-producing film removable from said base.

14. As a new article of manufacture, means for producing mat-surface effects, comprising a temporary base, said base havart of preparing surfaces which consists'in applying a resinv treated gelatine film having a toothed or; roughness of the base' or. bases will produce a mat-grainquality of.

ing a toothed or rough granular face, associated with a resin-treated mat-producing film removable from said base.

15. As a new article of manufacture, means for producing mat-surface effects, comprising a temporary base, associated with a resin-treated mat-surface producing gelatine film removable from said base.

16. As a. new article of manufacture, means .for producing mat-surface efi'ccts, comprising a temporary base, said base having a toothed or rough granular face, associated with a resin-treated mat-surface producing gelatine film removable from said base.

17 A surface tissue film for photographic negatives and other objects having a granular texture and an innate quality of translucency to produce a film-tissue without reflective impairment.

18. A surface tissue film for photographic negatives and other objects having a granular texture and an innate quality of transluecncy to produce a film-tissue without reflective impairmenfisaid film having a hard resin-treated working surface.

19. A gelatine surface tissue film for photographic negatives and other objects having a granular texture and an innate quality of transluccncy to produce a film-tissue without reflective impairment.

20. A gelatine surface tissue film for pho-' WALTER W. GIVEANS. 

